132 NORTH AMERICAN BIRDS. 



ochraccous. deepest laterally, the posterior portion usually with a few 

 longitudinal streaks of dusky. Hah. Tropical America, north to Mid- 

 dle Mexico. 



Falco communis, (!.mel. 



Var aiialiliii. r-'>\.\i"- 



AMERICAN PEREGRINE FALCON; DUCK HAWK. 



/ 



! Accipiier /(dco '/naculcUus, Briss. Orn. I, 329. ? Falco ittcviiis, G.mel. S. N. 1789, 271. 

 Fiilco commttnis f, and F. communis rj. Lath. Ind. Om. p. 31. Falco communis, 

 CouES, Key, 1872, 213, f. 141. Falco pcrcgrinus, Oia). AVils. Am. Oru. 1808, pi. Ixvi. — 

 Sab. L. Trans. XII, 529. — KiCH. Parry's 2d Voy. App. 342. —Id. F. B. A. II, 1831, 

 23. — BONAP. K. Y. Lye. 11, 27. -tIb. Isis, 18-32, 1136; Consp. 1850, 23, No. 4. — 

 King, Voy. Beag. I, 1839, 532. —James. Wils. Am. Orn. G77, Synoi). 1852, 683.— 

 Weudeub. Jard. Contr. to Orn. 1849, 81. — Woouii. Sitgr. Zufii, 1853, 60. — Gihaud, 

 B. Long Island, 1844, 14. — Peale, U. S. Ex. Ex. 1848, 66. —Gray, Li.st B. Brit. JIus. 

 1841, 51. Falco anatum, Bosap. Eur. & N. Am. B. 1838, 4. — Is. Rev. Zoid. 1850; 

 484. — BuiDC. Proc. Zobl. Soc. pi. xi, 109. — Ib. Ann. N. H. XIII, 499. — Gosse, B. 

 Jam. 1847, 16. — Cass. B. Cal. & Tex. 1854, 86. — Ib. Birds N. Am. 1858, 7. — DeKay, 

 Zool. N. Y. II, 13, pi. iii, f. 8. — Nutt. Man. 1833, 53. — Peab. B. Mass. 1841, 83. 

 — Stp.ickl. Orn. Syn. I, 1855, 83. — Bl.4.kist. Ibis, III, 1861, 315. — March, Pr. Ac. 

 N. S. 1863, 304. Falco nirjriccps, Cass. B. Cal. & Tex. I, 1853, 87. — Ib. Birds N. 

 Am. 1858, 8. — Strickl. Orn. Syn. I, 8.5. — Coop. & Suckl. P. R. R. Kep't, VII, ii, 

 1860, 142. — Gray, Hand List, I, 1869, 19, No. 166. — Shaupe, Ann. & Mag. N. H. 

 Falco orioilalis, (Git.) Gray, Hand List, I, 1869, 19, No. 165 (in part). ? Falco 

 cassini, Shap.pe, Ann. & JIag. N. II. 



Sp. Char. Adtdl (<?, 43,1.34, Fort Resolution, Brit. X. Am., June; J. Lockhart). 

 Upper part« dark bluish-plumbeous, approaching black anteriorly, but on rump and upper 

 tail-coverts becoming fine bluish plumbeous-ash. On the head and neck the continuous 

 plumbeous-black cover.s all the former except the chin and throat, and the back portion 

 of the latter ; an invasion or indentation of the white of lower parts up behind the ear- 

 coverts separatin;^ that of the cheeks from the posterior black, throwing the former into 

 a prominent angular patch ; forehead and lores grayish. All the feathers above (posterior 

 to the nape) with transverse bars of plumbeous-black, these most sharply defined 

 posteriorly, where the plumbeous is lightest. Tail black, more plumbeous basally, very 

 faintly paler at the tip, and showing ten or eleven tiausverse narrow bands of plumbeous, 

 these most distinct anteriorly ; the bars are clearest on inner webs. Alula, primary 

 and secondary covort.s, secondaries and i)rimaries, uniform plumbeous-black, narrowly 

 whitish on terjninal margin, most observable on secondaries and inner primaries. Lower 

 parts white, tinged with delicate cream-color, this deepest oh the abdomen ; sides and 

 tibiaj tinged with bluish. Chin, throat, and jugulum immaculate ; the breast, however, 

 with faint longitudinal shaft-streaks of black; sides, flank.s, and tibiae distinctly barred 

 transversely with black, about four bars being on each feather ; on the lower tail-coverts 

 they are narrower and more distant; on the abdomen the markings are in the form of 

 circular spots ; anal region barred transversely. Lining of the wing (including all the 

 under coverts) white tinged with blue, and barred like the sides ; under surface of 

 primaries slaty, with elliptical spots or bars of creamy-white on inner webs, twelve on 

 the longest. Wing-formula, 2-1-3. Wing, 12.25; tail, G.OO; tarsus, l.GO; middle toe, 

 1.85; outer, 1.40; inner, 1.20; posterior, .80 ; culmen, .80. 



9 (13,077, Liljcrty Co., Georgia; Professor J. L. Leconte). Like the male, but 

 ochraceoiis tinge beneath deeper ; no ashy wash ; bands on the tail more sharply defined, 

 about ten dark ones being indicated ; outer surface of primaries and secondaries with 



